at first, you have to cut out two small and two big parts. the small part ends under your breast. the big is as long as you want.
Step 2
you can see my size on the picture
Step 3
you get one side when you sew together a small and a big part.
if you want to add some nice pleat, then you can use this : http://www.cutoutandkeep.net/projects/butterflies_and_fruit_pleated_tote_2
When you do this, you will need a wider big part
you do this twice so now you get two sides:)
Step 4
sew together the two sides. you can slenderize it if you think ( i think its the better solution)
Step 5
at the end you sew down the top and the bottom of the top (one row at the botton)
<3!
you should make a how to